"In order for maintenance crews to accomplish track and signal improvements in the shortest time, Amtrak is temporarily modifying schedules. The largest change affects the schedule of Train 365, the Blue Water, westbound from Port Huron," Amtrak and the Michigan Department of Transportation said in a news release.

The Blue Water changes are scheduled to be in effect until Aug. 31.

The Blue Water runs daily with stops in the following Michigan cities: New Buffalo, Niles, Dowagiac, Kalamazoo, Battle Creek, East Lansing, Durand, Flint, Lapeer and Port Huron.